[ 32.743532][ T288] br0: port 1(veth1) entered blocking state [ 32.744017][ T288] br0: port 1(veth1) entered disabled state [ 32.744432][ T288] veth1: entered allmulticast mode [ 32.746539][ T288] veth1: entered promiscuous mode [ 32.900659][ T290] br0: port 2(veth2) entered blocking state [ 32.900981][ T290] br0: port 2(veth2) entered disabled state [ 32.901642][ T290] veth2: entered allmulticast mode [ 32.903592][ T290] veth2: entered promiscuous mode [ 33.180711][ T7] br0: port 1(veth1) entered blocking state [ 33.181071][ T7] br0: port 1(veth1) entered forwarding state [ 33.316077][ T50] br0: port 2(veth2) entered blocking state [ 33.316749][ T50] br0: port 2(veth2) entered forwarding state [ 48.414568][ T340] GACT probability NOT on [ 48.439550][ T337] tc (337) used greatest stack depth: 24272 bytes left [ 48.461641][ C0] [ 48.461831][ C0] ======================================================== [ 48.462247][ C0] WARNING: possible irq lock inversion dependency detected [ 48.462701][ C0] 6.9.0-rc1-virtme #1 Not tainted [ 48.463025][ C0] -------------------------------------------------------- [ 48.463419][ C0] swapper/0/0 just changed the state of lock: [ 48.463728][ C0] ffff888005c9ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.464470][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 48.464911][ C0] (&p->alloc_lock){+.+.}-{2:2} [ 48.464919][ C0] [ 48.464919][ C0] [ 48.464919][ C0] and interrupts could create inverse lock ordering between them. [ 48.464919][ C0] [ 48.465890][ C0] [ 48.465890][ C0] other info that might help us debug this: [ 48.466275][ C0] Chain exists of: [ 48.466275][ C0] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 48.466275][ C0] [ 48.466860][ C0] Possible interrupt unsafe locking scenario: [ 48.466860][ C0] [ 48.467250][ C0] CPU0 CPU1 [ 48.467502][ C0] ---- ---- [ 48.467764][ C0] lock(&p->alloc_lock); [ 48.467963][ C0] local_irq_disable(); [ 48.468290][ C0] lock(&br->lock); [ 48.468647][ C0] lock(lweventlist_lock); [ 48.469034][ C0] [ 48.469247][ C0] lock(&br->lock); [ 48.469506][ C0] [ 48.469506][ C0] *** DEADLOCK *** [ 48.469506][ C0] [ 48.469918][ C0] 1 lock held by swapper/0/0: [ 48.470193][ C0] #0: ffffc90000007d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 48.470766][ C0] [ 48.470766][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 48.471338][ C0] -> (&p->alloc_lock){+.+.}-{2:2} { [ 48.471646][ C0] HARDIRQ-ON-W at: [ 48.471860][ C0] __lock_acquire+0x797/0x1570 [ 48.472233][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.472587][ C0] _raw_spin_lock+0x30/0x40 [ 48.472924][ C0] set_mems_allowed+0x1d/0x210 [ 48.473269][ C0] kernel_init_freeable+0x72/0x310 [ 48.473602][ C0] kernel_init+0x20/0x200 [ 48.473950][ C0] ret_from_fork+0x31/0x70 [ 48.474271][ C0] ret_from_fork_asm+0x1a/0x30 [ 48.474611][ C0] SOFTIRQ-ON-W at: [ 48.474808][ C0] __lock_acquire+0x797/0x1570 [ 48.475148][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.475475][ C0] _raw_spin_lock+0x30/0x40 [ 48.475800][ C0] set_mems_allowed+0x1d/0x210 [ 48.476140][ C0] kernel_init_freeable+0x72/0x310 [ 48.476473][ C0] kernel_init+0x20/0x200 [ 48.476819][ C0] ret_from_fork+0x31/0x70 [ 48.477153][ C0] ret_from_fork_asm+0x1a/0x30 [ 48.477672][ C0] INITIAL USE at: [ 48.477878][ C0] __lock_acquire+0x797/0x1570 [ 48.478206][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.478539][ C0] _raw_spin_lock+0x30/0x40 [ 48.479052][ C0] set_mems_allowed+0x1d/0x210 [ 48.479377][ C0] kernel_init_freeable+0x72/0x310 [ 48.479720][ C0] kernel_init+0x20/0x200 [ 48.480227][ C0] ret_from_fork+0x31/0x70 [ 48.480752][ C0] ret_from_fork_asm+0x1a/0x30 [ 48.481101][ C0] } [ 48.481234][ C0] ... key at: [] __key.387+0x0/0x40 [ 48.481829][ C0] ... acquired at: [ 48.482031][ C0] __lock_acquire+0xaf0/0x1570 [ 48.482300][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.482747][ C0] _raw_spin_lock+0x30/0x40 [ 48.483193][ C0] __get_task_comm+0x27/0x70 [ 48.483467][ C0] ref_tracker_alloc+0x2ee/0x490 [ 48.483736][ C0] linkwatch_fire_event+0x196/0x200 [ 48.484008][ C0] veth_newlink+0x367/0x830 [veth] [ 48.484289][ C0] rtnl_newlink_create+0x341/0x850 [ 48.484721][ C0] __rtnl_newlink+0xac9/0xd80 [ 48.484994][ C0] rtnl_newlink+0x63/0xa0 [ 48.485251][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.485498][ C0] netlink_rcv_skb+0x130/0x360 [ 48.485921][ C0] netlink_unicast+0x449/0x710 [ 48.486180][ C0] netlink_sendmsg+0x723/0xbe0 [ 48.486433][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 48.486689][ C0] ___sys_sendmsg+0xee/0x170 [ 48.487115][ C0] __sys_sendmsg+0xcd/0x170 [ 48.487368][ C0] do_syscall_64+0xc6/0x1e0 [ 48.487627][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.487950][ C0] [ 48.488085][ C0] -> (lweventlist_lock){....}-{2:2} { [ 48.488539][ C0] INITIAL USE at: [ 48.488719][ C0] __lock_acquire+0x797/0x1570 [ 48.489004][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.489338][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 48.489672][ C0] linkwatch_sync_dev+0x29/0x1f0 [ 48.490044][ C0] rtnl_getlink+0x4c9/0x970 [ 48.490348][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.490818][ C0] netlink_rcv_skb+0x130/0x360 [ 48.491162][ C0] netlink_unicast+0x449/0x710 [ 48.491505][ C0] netlink_sendmsg+0x723/0xbe0 [ 48.492183][ C0] __sys_sendto+0x37d/0x410 [ 48.492501][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 48.492831][ C0] do_syscall_64+0xc6/0x1e0 [ 48.493183][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.493775][ C0] } [ 48.493924][ C0] ... key at: [] lweventlist_lock+0x18/0x60 [ 48.494310][ C0] ... acquired at: [ 48.494495][ C0] __lock_acquire+0xaf0/0x1570 [ 48.495414][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.495675][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 48.495924][ C0] linkwatch_fire_event+0x74/0x200 [ 48.496206][ C0] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 48.496795][ C0] br_set_mac_address+0x1f3/0x260 [bridge] [ 48.497398][ C0] dev_set_mac_address+0x28a/0x410 [ 48.497706][ C0] dev_set_mac_address_user+0x31/0x50 [ 48.497972][ C0] do_setlink+0x17b4/0x21e0 [ 48.498501][ C0] rtnl_setlink+0x1f7/0x310 [ 48.498759][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.499042][ C0] netlink_rcv_skb+0x130/0x360 [ 48.499312][ C0] netlink_unicast+0x449/0x710 [ 48.499576][ C0] netlink_sendmsg+0x723/0xbe0 [ 48.499842][ C0] __sys_sendto+0x37d/0x410 [ 48.500105][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 48.500504][ C0] do_syscall_64+0xc6/0x1e0 [ 48.500753][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.501307][ C0] [ 48.501454][ C0] -> (&br->lock){+.-.}-{2:2} { [ 48.501732][ C0] HARDIRQ-ON-W at: [ 48.501941][ C0] __lock_acquire+0x797/0x1570 [ 48.502297][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.502647][ C0] _raw_spin_lock_bh+0x38/0x50 [ 48.502988][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 48.503662][ C0] dev_set_mac_address+0x28a/0x410 [ 48.504012][ C0] dev_set_mac_address_user+0x31/0x50 [ 48.504367][ C0] do_setlink+0x17b4/0x21e0 [ 48.504883][ C0] rtnl_setlink+0x1f7/0x310 [ 48.505229][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.505591][ C0] netlink_rcv_skb+0x130/0x360 [ 48.506112][ C0] netlink_unicast+0x449/0x710 [ 48.506463][ C0] netlink_sendmsg+0x723/0xbe0 [ 48.506975][ C0] __sys_sendto+0x37d/0x410 [ 48.507310][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 48.507812][ C0] do_syscall_64+0xc6/0x1e0 [ 48.508152][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.508570][ C0] IN-SOFTIRQ-W at: [ 48.508779][ C0] __lock_acquire+0x797/0x1570 [ 48.509293][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.509619][ C0] _raw_spin_lock+0x30/0x40 [ 48.509962][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.510602][ C0] call_timer_fn+0x13b/0x230 [ 48.510944][ C0] __run_timers+0x545/0x810 [ 48.511269][ C0] run_timer_softirq+0xe8/0x1b0 [ 48.511612][ C0] __do_softirq+0x1f8/0x5df [ 48.512128][ C0] irq_exit_rcu+0x97/0xc0 [ 48.512480][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.512877][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.513468][ C0] default_idle+0xf/0x20 [ 48.513816][ C0] default_idle_call+0x6d/0xb0 [ 48.514359][ C0] cpuidle_idle_call+0x1f4/0x280 [ 48.514710][ C0] do_idle+0xf9/0x160 [ 48.514986][ C0] cpu_startup_entry+0x54/0x60 [ 48.515330][ C0] rest_init+0x14f/0x260 [ 48.515686][ C0] start_kernel+0x318/0x3d0 [ 48.516030][ C0] x86_64_start_reservations+0x18/0x30 [ 48.516375][ C0] x86_64_start_kernel+0xba/0x110 [ 48.516709][ C0] common_startup_64+0x12c/0x138 [ 48.517248][ C0] INITIAL USE at: [ 48.517455][ C0] __lock_acquire+0x797/0x1570 [ 48.517813][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.518162][ C0] _raw_spin_lock_bh+0x38/0x50 [ 48.518685][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 48.519158][ C0] dev_set_mac_address+0x28a/0x410 [ 48.519502][ C0] dev_set_mac_address_user+0x31/0x50 [ 48.520032][ C0] do_setlink+0x17b4/0x21e0 [ 48.520389][ C0] rtnl_setlink+0x1f7/0x310 [ 48.520904][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.521252][ C0] netlink_rcv_skb+0x130/0x360 [ 48.521767][ C0] netlink_unicast+0x449/0x710 [ 48.522128][ C0] netlink_sendmsg+0x723/0xbe0 [ 48.522455][ C0] __sys_sendto+0x37d/0x410 [ 48.523028][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 48.523622][ C0] do_syscall_64+0xc6/0x1e0 [ 48.524031][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.524660][ C0] } [ 48.524801][ C0] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 48.525556][ C0] ... acquired at: [ 48.525769][ C0] mark_lock+0x28d/0x3e0 [ 48.526222][ C0] mark_usage+0xd9/0x2a0 [ 48.526672][ C0] __lock_acquire+0x797/0x1570 [ 48.526944][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.527215][ C0] _raw_spin_lock+0x30/0x40 [ 48.527503][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.527929][ C0] call_timer_fn+0x13b/0x230 [ 48.528221][ C0] __run_timers+0x545/0x810 [ 48.528501][ C0] run_timer_softirq+0xe8/0x1b0 [ 48.528928][ C0] __do_softirq+0x1f8/0x5df [ 48.529197][ C0] irq_exit_rcu+0x97/0xc0 [ 48.529453][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.529787][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.530275][ C0] default_idle+0xf/0x20 [ 48.530528][ C0] default_idle_call+0x6d/0xb0 [ 48.530799][ C0] cpuidle_idle_call+0x1f4/0x280 [ 48.531061][ C0] do_idle+0xf9/0x160 [ 48.531270][ C0] cpu_startup_entry+0x54/0x60 [ 48.531539][ C0] rest_init+0x14f/0x260 [ 48.531805][ C0] start_kernel+0x318/0x3d0 [ 48.532056][ C0] x86_64_start_reservations+0x18/0x30 [ 48.532317][ C0] x86_64_start_kernel+0xba/0x110 [ 48.532756][ C0] common_startup_64+0x12c/0x138 [ 48.533033][ C0] [ 48.533169][ C0] [ 48.533169][ C0] stack backtrace: [ 48.533505][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-virtme #1 [ 48.534257][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 48.534868][ C0] Call Trace: [ 48.535079][ C0] [ 48.535416][ C0] dump_stack_lvl+0x82/0xd0 [ 48.535693][ C0] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 48.536020][ C0] ? common_startup_64+0x12c/0x138 [ 48.536300][ C0] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 48.536654][ C0] ? __pfx_usage_skip+0x10/0x10 [ 48.536910][ C0] ? __pfx_usage_match+0x10/0x10 [ 48.537182][ C0] ? arch_stack_walk+0x8c/0xf0 [ 48.537462][ C0] mark_lock_irq+0x4cd/0xa10 [ 48.537744][ C0] ? __pfx_mark_lock_irq+0x10/0x10 [ 48.538196][ C0] ? stack_trace_save+0x94/0xd0 [ 48.538474][ C0] ? add_chain_cache+0x248/0x8b0 [ 48.538760][ C0] ? save_trace+0x8f/0x5b0 [ 48.539036][ C0] mark_lock+0x28d/0x3e0 [ 48.539441][ C0] mark_usage+0xd9/0x2a0 [ 48.539736][ C0] __lock_acquire+0x797/0x1570 [ 48.540024][ C0] ? __lock_acquire+0xaf0/0x1570 [ 48.540348][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 48.540818][ C0] lock_acquire.part.0+0xeb/0x330 [ 48.541112][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.541570][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 48.542180][ C0] ? trace_lock_acquire+0x135/0x1c0 [ 48.542451][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.543048][ C0] ? lock_acquire+0x32/0xc0 [ 48.543333][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.543737][ C0] _raw_spin_lock+0x30/0x40 [ 48.544187][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.544592][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 48.545025][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 48.545670][ C0] call_timer_fn+0x13b/0x230 [ 48.545936][ C0] ? call_timer_fn+0xe8/0x230 [ 48.546202][ C0] ? call_timer_fn+0xe8/0x230 [ 48.546471][ C0] ? __pfx_call_timer_fn+0x10/0x10 [ 48.546910][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 48.547173][ C0] __run_timers+0x545/0x810 [ 48.547417][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 48.547853][ C0] ? __pfx___run_timers+0x10/0x10 [ 48.548303][ C0] ? do_raw_spin_lock+0x131/0x270 [ 48.548569][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 48.548827][ C0] ? lock_acquire+0x32/0xc0 [ 48.549087][ C0] ? run_timer_softirq+0xe0/0x1b0 [ 48.549543][ C0] run_timer_softirq+0xe8/0x1b0 [ 48.549830][ C0] __do_softirq+0x1f8/0x5df [ 48.550102][ C0] irq_exit_rcu+0x97/0xc0 [ 48.550304][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.550567][ C0] [ 48.550903][ C0] [ 48.551044][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.551395][ C0] RIP: 0010:default_idle+0xf/0x20 [ 48.551895][ C0] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d a3 30 35 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 48.553045][ C0] RSP: 0018:ffffffffae407e00 EFLAGS: 00000242 [ 48.553393][ C0] RAX: 00000000000a2367 RBX: 1ffffffff5c80fc2 RCX: ffffffffad50e9d5 [ 48.553940][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffaaeaa4a4 [ 48.554310][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0709c [ 48.554988][ C0] R10: ffff8880360384e3 R11: 1ffff110003a910c R12: 0000000000000000 [ 48.555598][ C0] R13: ffffffffae41d000 R14: dffffc0000000000 R15: 0000000000014770 [ 48.556080][ C0] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 48.556348][ C0] ? cpuidle_idle_call+0x1f4/0x280 [ 48.556605][ C0] default_idle_call+0x6d/0xb0 [ 48.556866][ C0] cpuidle_idle_call+0x1f4/0x280 [ 48.557129][ C0] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 48.557395][ C0] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 48.557680][ C0] do_idle+0xf9/0x160 [ 48.557871][ C0] cpu_startup_entry+0x54/0x60 [ 48.558151][ C0] rest_init+0x14f/0x260 [ 48.558366][ C0] start_kernel+0x318/0x3d0 [ 48.558637][ C0] x86_64_start_reservations+0x18/0x30 [ 48.558889][ C0] x86_64_start_kernel+0xba/0x110 [ 48.559174][ C0] common_startup_64+0x12c/0x138 [ 48.559444][ C0] [ 223.854536][ T1479] br0: port 2(veth2) entered disabled state [ 223.963415][ T1480] br0: port 1(veth1) entered disabled state [ 224.062275][ T1481] veth2: left allmulticast mode [ 224.062465][ T1481] veth2: left promiscuous mode [ 224.062728][ T1481] br0: port 2(veth2) entered disabled state [ 224.063672][ T1481] veth1: left allmulticast mode [ 224.063828][ T1481] veth1: left promiscuous mode [ 224.064068][ T1481] br0: port 1(veth1) entered disabled state